Adjustable pitman for lays of looms



Jan. 13,1931. J. H. KELLEY 5 ADJUSTABLE PITMAN FOR LAYS OF LOOMS Filed Nov. 13. 1929 05in HZZZZcy Patented Jan. 1931 Joann. KELLEY, OZIBILANGLEY, scum cARoLINA ADJUSTABLE :ei m'mn FOR ens F Looms Application filed iToVe1nher 13 ,v1929; serial m5. 4oe,9oo.

Thisinyention relates to looms andmore I particularly to a pitm an or connecting arm which extends between the crankshaft and; lay of a loom and inipartsnioven ent to the 'lay-whenjthejloom is in operation, 'When a I loom is'in operation, the lay is swung back andforth by a pit -ma n or connecting arm n extending between the leyend a crenkshaft .ceiye' set screws, cartied bearings inwhich 2c: the pin isimounted do not properly registef with openingsithrough' which set screws e v the'bearingsare pesse'dund it is'then veryie through thdscrewj connecting the twosec i 7 in) an a 'djii'sted" positionv and often: a bearing 125. will he, broken bythe-strain exerted when thescre I-is tightened. i i

( Therefore, one ob'ect of theinyentionis to IDYOVldQ a; pitman or connecting arrn sof constructed that the lujse of an eccentric pin Y is eliininatedandet theseine time allowthe epitrnan'to be adjustedinordef t o compensete for wear when necessary; 1

v It jiselso Very important that *the .dis tance between the axis-0f the 'crankarmt'end the 'pin connecting the, other end of the pitnan with the lay; remain the' seine anfd, therefore, another obj ect of the invention is etions have-proper fit about thepin and crank a-nn of the shaft and therebyfrestore the pitmento its originallength ,f? r

Another objectfof the invention is to pi o 1 yide a pitman fox looms in which end sec- V e. tion's thereoi are ndjustahly(connected: by ii screw hay ng; oppositely ithreeded stems recelved "1n" threadedyope'nings' of; the. two'jsec V fieetions' and allow the adjusting;screw to 'be 'easilyconverted into e pitmen of the 1m roved1'(z'onst 'uctio n- I fedito thelay. pivotpin 8'is carried by rpivotelly mount one :end "of the pitnmn; but

firmlysecured in a set position after an adjustment has beenniade thereby prevent ing the screws from accidentally moving.

-Another object of the invention, is to so construct the pitman that elements ino'w formingfpart of a pitinanealrea-dyin use maybe employed and thereby allow a pitman of a conventional construction to be The ii'i vention is .il p'anying,drnwing, wherein e I Figure'l is at .vieW showing the improved pitinanoi' connecting arm applied to adeem' otnconyentionel 'const ruction, m v YfFig; 2 Is an "enl rged hg i m lmpmved 'p i p y m 1 Blevin tijon and partially in section, N y .7 e 'c v 1 F1g93 is a vlongitudinal sectional View I throughthe pitinan' taken on the line 3430i; 76 7 Q Fig.2, and I F g. 4 152 a transverse sectional x lefw tion s ofthepitman, the yiewbcing taken-en k the line H .111 Figure L there'h'a'sheen shown Act-Fig.

tion' of: a, loom. This loom, which I ceted' ingenerelfhy. the numeral 1; s-o'f conventional construction and includes" the usualr'ley 2 and crank shaft 8. e-A-bearil'ig g carriedbyfthe lay 2 and includes a pair of l he s ears-:thetween Which fits one end of'a con! necting arm 0; pitinan '5 whichextends be-etween; the, lay and the crank shaft so that When'the crank shaft is rotated" by thegears (Send 7 swinging noveinentwillbeimpart; e

the earse-of the bearing upon the lay to this pin insteadof'being '01" an ecieiit'ric formation has its intermediate p'ortionffQ' concentric to its portions '10 and ll-fwhichfl' ere 'receiyedin the ears ofthe hearingnnd- "the pin is retained in placejby ante screwed upon itslre dnced end threaded endlQ;

Refer 'ing to Figures 2 211x113,- it"yvillQlie seen that th s nnprovedzp t nen or connect:

jing 'arinicjonsists of end s'e'c'tion'slgfagnd "14: T whi'chx are formed lofjwood and atf-their' 'l tejffe'nds are i'ecessed to form arcuate seats t ated 1n the-accon Having thus described the invention, 1 I passed through the pitman sections and. I claim: V slots of'said yoke arms to drawthe arms 1. A pitm'an comprising end sections, each towards each other for-tight binding enhavingia threaded bore extending longitudgagement with the pitman sections and inally from its inner end, yokes straddling boss. .7 I s j l I said sections and having arms provided with In testimony whereof I affiX my signature; 7 outstanding feet at their inner ends, the 1 JOHN H. KELLEY. arms of one yoke extending,beyond the inner end of the pitman section straddled 10 thereby, an adjustable connection forfsaid a I I V i Z3 pitman sections consisting of a boss disposed between the sections and oppositely threaded stems extending from said. boss and engaged in the threaded; bores of the sec- I V 15 tions, said boss being overlapped bythe [3 .extendedends'oftheelongated yoke, bolts A passed through the pitman sections and arms of said yokes .to draw the armsinto 7 binding engagement with the pitn an sec- V I H I I r I I -tions and bars, and bolts extending through V I s I I 3 I the feet 01 saidyokes. I

2. I A pitman comprising end" sections, heads for the inner ends of said sections formed with threaded openings, an adjust-f 1 able connection between said sections 'conf a 2 I I V to" 'sisting'of a boss having oppositely threaded stems extending from opposite sidesthereA I A ofand engaged through theopenings of said heads, yokes straddlingzthe pitman' q'section's and having bridge portions jpro -j 5 r i I e5 jecting from the outer ends of the ,pit'man: j a a i f sections and armsengaging opposed" faces thereof and provided with outstanding feet at their innerends, the arms of one yoke I r I a 'overlapping's'aid'boss, bolts passed through i i V i 1 I ""ioo thefeet of'said yokes to effect longitudinal I i t i adjustment of the yokes, and'bolts passed.

' if through the pitman sections and arms {of I positions upon the jp'itman' sections and th okes to bind the yokes' in adjusted 'cause the bossto be gripped between the arms of the yoke overlapping the same'and secure the adjustable connection in a set position."

" 3." pitmanbornprising end sections, 1 i -T I 1 I i' heads for'flthe innenends of zsaidsections formed with threaded "openings andthaving I arms extending along and secured against opposed faces of s'aidsections to securethe 59 heads and'reinforce the pitman sections, the i j I f I 17115- outer'ends of said sections being recessed to forinarcuate'seats, an adjustable con 7 nection between said sections consisting of a boss and oppositely threaded stems extenda ing therefrom and engaged throughthe I 12c I openings in said heads, yokes straddling" said pitman sectionsand each havingarins Q bearing against opposed faces of the sections between the arms of said heads, the

5e arms of said' yokes being formed with longf a if I i Q '12s itudinally' extending slots and having their 3 l free inner ends bent outwardly to fo'rni feet,

"wsa to adjust the yokes longitudinally,and bolts j a v I I 130 the arms of oneyoke extending to overlap saidboss, bolts passed through said feet 

